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Catholic email addresses in cheating hack

About 90 email addresses in the cache of data allegedly hacked from the Ashley Madison infidelity website appear to be linked to Australian Catholic education accounts.

A further examination of the data, first dumped on Wednesday, shows there are 91 users registered with an email address containing the domain catholic.edu.au.

Of these, 32 are believed to be verified.

The dump of data on Wednesday came after hacking group The Impact Team threatened in July to release information on users of Ashley Madison unless its publisher took the site down.

Ashley Madison is owned by Canadian-based company Avid Life Media.

Accounts linked to employees from the federal departments of health, education and environment, from the ABC, and from the NSW Attorney-General's Department were included in the cache, as were many from defence and foreign affairs.

In fact, there are about 812 user profiles using government email addresses.

There are 234 unique gov.au domains.

The bulk are from Defence, NSW education department and the Victorian education department.

And of the more than one million Ashley Madison accounts linked to Australians, about 700,000 have verified their email contact.

The overwhelming majority - or 86 per cent - of the total accounts are linked to a man.

The hacked data, released on the dark web and seen by AAP, includes credit card details, email accounts and home addresses.